[meta] Use a community icon

Every time I come across a !golang post I feel like a proper icon is missing.

I mean, why not? Other programming communities already have theirs, and, in my opinion, we have the best and cutest mascot of them all, so why not use it?

I would propose we use the classic standing gopher. There is a free gophers collection as well. Both are licensed under Creative Commons 3.0 and CC0, respectively.

@gregf@lemmy.ml and @rek2@lemmy.ml, any thoughts on this?